Motor.



,Paten'ted Feb. I2, I90l.

J. R. DANIELS.

(Application filed Aug. a1, 1900.;

{No Model.)

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JAMES R. DANIELS, OF SAN ANTONIO, TEXAS, ASSIGNOR OF ONE-HALF TO J. M.IIOOPER, OF SAME PLACE, AND W. H. WVI-IITTLE, OF MCI-IENRY,

MISSISSIPPI.

MOTOR.

SPECIFICATION forming part of Letters Patent No. 667,683, dated February12, 1901.

\ Application filed August 31,1900. Serial No. 28,689. (No model.)

To an who/1t it may concern.-

Be it known that I, JAMES R. DANIELS, a citizen of the United States,residing at San Antonio. in the county of Bexar and State of Texas, haveinvented a new and useful Motor,

of which the following is a specification.

This invention relates to a novel motor or propelling and controllingmechanism for operating sewing-machines and similar devices requiring noconsiderable power for their successful operation.

The object of the invention is to provide a simple and inexpensive motorwhich may be quickly attached to a sewing-machine or simi- I5 lar frameand embodying novel controlling mechanism for quickly stopping orstarting the motor at will and with simple means for effecting anoperative connection between the motor and the balance-wheel of asewingmachine or an equivalent element of other classes of devicesdesigned to be operated.

To the accomplishment of the desired end the invention consists in theconstruction and arrangement of the parts to be hereinafter fullydescribed, illustrated in the accompanying drawings, and succinctlydefined in the appended claims.

In said drawings, Figure 1 is an elevation of a sewing-machine,illustrating the applica-' tion of my motor. Fig. 2 is a centrallongitudinal section through the motor complete, showing the controllingmechanism in elevation; and Fig. 3 is an elevation of the subjectmatterof Fig. 2 with the cover of the motorcasing removed.

Referring to the numerals of reference employed to designatecorresponding parts throughout the several views, 1 indicates asewing-machine, to which my motor (indi cated by the numeral 2) isapplied. The motor is inclosed within a casing 3, from the rear wall ofwhich extends a suitable clamping device for retaining the motor uponthe frame of the machine, said device preferably comprising a pair ofthreaded bolts 4:, piercing the opposite ends of an adjustableclampingplate 5, between which and the adjacent wall of the casing thesupporting part is designed to be clamped by screwing up the nuts 6,car- 5 ried by the bolts 4 and bearing against the plate 5. IVithin thecasing 3, which is provided with a removable cover-plate 7, is mounted apair of parallel frame-plates 8 and 9, in which are journaled theopposite ends of the power-shaft 10 of the motor and likewise the shaftsor arbors 11 and 12 of a train of gears designed to transmit motion fromthe power-shaft 10 to the shaft 12, upon which latter is keyed a groovedbelt-pulley 13, as clearly shown in Fig. 2 of the drawings. Thepower-shaft 10 is provided with a windinghandle 14, extending outside ofthe casing 3 to facilitate the winding of the motor-spring l5, and, asusual in this class of devices, the connection between the power-shaftand the main gear-wheel 16 of the train is efiected through the mediumof a ratchet-wheel17, fixed upon the shaft 10 and designed, when theshaft is rotated under the impulse of the spring 15, to engage a pawl18, carried by the wheel 16. 7c

The belt-pulley 13 is peripherally grooved, as shown, and is belt-ed,preferably, through the medium of a rubber or other frictional belt 19to a similar, but somewhat larger, beltpulley 20, formed concentric withand upon one side face of a peripherally-grooved driving-wheel 21,fitted with a tubular rubber tire 22, designed to be frictionallyreceived against the periphery of the balance-wheel 23 of asewing-machine. So

The particular arrangement of the motor upon the machine-frame is notessential, as it necessarily varies with different constructions andwhen used in connection with various types of mechanisms; but aconvenient 8 arrangement is shown in Fig. l of the drawings, wherein themotor is mounted under the machine-table and the drivingwheel 21 isextended through the table for presentation to the periphery of thebalance-Wheel 23. 0

It will now appear that the power generated by the motor-spring 15 willdrive the beltpulley 13 through the intermediate train of gearing andthat said pulley will in turn drive the wheel 21 by reason of thebelt-gearing 19, 5 the operative connection between the wheel 21 and thebalance-wheel 23 of the machine being effected by the frictionalreception of the tire 22 against the peripheral face of thebalance-wheel which is ordinarily employed in connection with thedriving-belt of the sewing-machine.

IOO

In connection with the motor described I have devised controllingmechanism'of novel form,which mechanism comprehends a brakelever 23,pivotally sustained at a point intermediate of its ends, as by a stapleor other suitable device 24:, located upon the frameplate 8 adjacent toits upper edge, as indicated in Figs. 2 and 3 of the drawings. Thebrake-lever 23 is provided at its upper end with a brake-roller 25 inoperative relation with the belt 19 and at its opposite end withoperating mechanism, which in the present form of the invention isembodied in the thumb-screw 26, connected to the end of the brakeleverand screwed through the motor frame-plate 8, so that as said screw isrotated the lever will be oscillated to regulate the application of thebrake-roller 25 to the belt 19 for the purpose of controlling theoperation of the motor. In order that the brake-lever may be renderedadditionally effective, it is bent, as indicated at 27, for frictionalpresentation to the face of the belt-pulley 20, and its upper extremityis bent down around the roller 25 to constitute a housing therefor andto cause the presentation of this portion of the lever to the face ofthe driving-wheel 2i. If desired, the brake-lever may be provided withfriction-faces 28 and 29 at these points of contact, as shown. It willthus be seen that when the brake-lever is urged to its braking positionfrictional contact is made between the roller 25 and the belt 19 andbetween the brake-lever and the contiguous faces of the driving-wheel 21and the beltpulley 20.

In operation the motor-spring 15 is wound through the manipulation ofthe handle 14:, the ratchet l7 clicking idly against the pawl 18 duringthe winding, as usual. During this operation the rubber periphery of thedriving-wheel 21 is in frictional contact with the balance-wheel of themachine, but the motor is held inactive by the application of the brake.YVhen it is desired to impart movement to the machine, the thumb-screw26 is screwed in, which serves to depress the lower end of thebrake-lever for removing the latter from contact with the driving-wheelbeltpulley and belt. It will be observed that the frictional surfaces 28and 29 of the brake-lever are disposed in parallel planes and that thebrake-roller 25 is disposed in a plane at right angles to thesefriction-surfaces. The result of this arrangement of the retardingfacesis to cause the brake-lever when in use to exert pressure upon thedriving member in two directions as it is presented to the driving-wheeland pulley from the side and is urged in the direction of the peripheryto bring the roller 25 in contact with the belt.

Obviously,therefore, when it is desired to stop the machine it isnecessary to turn the thu mbscrew 26 in the opposite direction to swingthe brake-lever into its retarding position.

From the foregoing it will be seen that I have produced a simple andefficient motor for sewing-machines and the like embodying effectivecontrolling mechanism and adapted for ready attachment to the stand of amachine or other device; but while the present embodiment of theinvention appears at this time to be preferable I do not wish to limitmyself to the structural details defined, as it is obvious that manyvariations may be effected without departing from the spirit oftheinvention. Forinstance,the motor-casing may be made of any desiredform and provided with ornamentation to suit the individual taste of themanufactnrer,or the arrangement of gearing and the relative location ofthe driving-wheel may be varied in order to ELCCOHHllOilflLB the motorfor use in connection with machines of different patterns.

What I claim is 1. In a motor,the combination with a frame anddriving-wheel provided with a pulley extending from one side thereof, ofa brake-le ver disposed for contact with the side faces of both thedriving-wheel and pulley.

2. In a motor, the combination with a driving-wheel, a belt pulleymovable with the driving-wheel, and means for rotating said pulley, ofcontrolling mechanism comprising a brake-lever arranged to be urged intofrictional contact with the side faces of the driving-wheel andbelt-pulley, respectively, and with the periphery of said pulley.

3. In a motor of the character described, the combination with adriving-wheel formed with a belt-pulley projecting from one side facethereof, a second belt-pulley and a belt operatively connecting saidpulleys, of a brake-lever arranged to contact with the driving-wheel andthe first-named belt-pulley and provided with a brake-roller for contactwith the belt.

4. In a motor, the combination with a casing, a motor-spring andgearing, of a driving-wheel having africtional tire, a belt-pulleymovable with the driving-wheel, and a rubber belt for imparting movementto the beltpulley, of a brake-lever pivotally mounted upon the casingand bent into operative proximity to both the belt-pulley and drivingwheel for frictional contact therewith, a brakeroller carried by thebrake-lever for contact with the belt, and a thumb-screw connected withthe opposite end of the lever and extending from the side of the casingto facilitate the manipulation of said lever to control the operation ofthe motor.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature inthe presence of two witnesses.

JAMES R. DANIELS.

Witnesses:

R. F. ALEXANDER, J. T. BROWN.

